Superfund Information Systems: Site Profile

Superfund Site:

HIGHLANDS ACID PIT
HIGHLANDS, TX

Cleanup Progress

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Cleaning up Superfund sites is a complex, multi-phase process. Learn more:

Site-Wide Milestones

Milestone Date(s)
Preliminary Assessment/Site Investigation Completed 09/01/1979
Proposed to the National Priorities List 12/30/1982
Finalized on the National Priorities List 09/08/1983
Remedy Selected Not Yet Achieved
Remedial Action Started 09/24/1984
Construction Completed 06/29/1992
Deleted from National Priorities List Not Yet Achieved
Most Recent Five-Year Review 09/27/2012
Site Ready for Reuse and Redevelopment 10/10/2007

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Cleanup Schedule by Operable Unit

During cleanup, a site can be divided into a number of distinct areas depending on its complexity. These areas, called operable units (OUs), may address geographic areas, specific problems, or areas where a specific action is required. Examples of typical operable units include construction of a groundwater pump and treatment system or construction of a cap over a landfill.

Milestone OU Start Date Completion Date OU ID
Removal OU 00 - SITEWIDE 05/19/1984 05/21/1984 00
Removal OU 00 - SITEWIDE 07/31/1985 08/01/1985 00
Five-Year Review OU 00 - SITEWIDE 06/13/1996 00
Five-Year Review OU 00 - SITEWIDE 09/27/2002 00
Five-Year Review OU 00 - SITEWIDE 09/27/2012 00
Five-Year Review OU 00 - SITEWIDE 09/28/2007 00
Remedial Design OU 01 - SOURCE 06/29/1984 12/04/1985 01
Remedial Action OU 01 - SOURCE 09/24/1984 06/29/1992 01
Remedial Action OU 01 - SOURCE 12/30/1997 02/28/2003 01
Operation and Maintenance OU 01 - SOURCE 06/30/1992 01

DISCLAIMER: The data on this page are derived from the Superfund Enterprise Management System and are solely for informational purposes. The data cannot be relied upon to create any substantive or procedural rights or requirements enforceable by any party in litigation with any member of the public, states, tribes, the United States or any federal agency. EPA reserves the right to change these data at any time without public notice.

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